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Polyethylene isolating film reusable in tire production and preparation method of polyethylene isolating film

A technology of polyethylene and isolation film, which is applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc. It can solve the problems of large differences in material properties and easy delamination, and achieve good bonding and compatibility Good, good mechanical properties and the effect of oxygen barrier properties

Active Publication Date: 2014-06-18
HAOCHEN WUXI PLASTIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common disadvantage of these methods is that the material properties between different layers are quite different, and it is easy to delaminate.

Method used

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  • Polyethylene isolating film reusable in tire production and preparation method of polyethylene isolating film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Polyethylene isolation film used for repeated use in tire production, including outer film, middle film and inner film; the thickness ratio of the three films is 3:2:3 in turn;

[0026] The total thickness of the outer layer film, the middle layer film and the inner layer film is 30 μm.

[0027] The polyethylene isolation film used for repeated use in tire production is calculated in parts by weight: the outer film and the inner film are blends of low-density polyethylene and linear low-density polyethylene, both of which are 30 parts; The middle layer film is a blend of linear low density polyethylene and an oxygen absorber, 20 parts.

[0028] In the outer film and the inner film, the weight ratio of low density polyethylene to linear low density polyethylene is 1:1; in the middle layer film, the weight ratio of linear low density polyethylene to oxygen absorber is 10:1.

[0029] The oxygen absorbent is iron powder with a mass fraction of 90% and electrolyte with 10%....

Embodiment 2

[0039] Polyethylene isolation film used for repeated use in tire production, including outer film, middle film and inner film; the thickness ratio of the three films is 4:2:4 in sequence;

[0040] The total thickness of the outer layer film, the middle layer film and the inner layer film is 150 μm.

[0041] The polyethylene isolation film used for repeated use in tire production is calculated in parts by weight: the outer film and the inner film are blends of low-density polyethylene and linear low-density polyethylene, both of which are 35 parts; The middle layer film is a blend of linear low density polyethylene and oxygen absorbing agent, which is 35 parts.

[0042] In the outer film and the inner film, the weight ratio of low density polyethylene to linear low density polyethylene is 6:1; in the middle layer film, the weight ratio of linear low density polyethylene to oxygen absorber is 60:1.

[0043] The oxygen absorbent is iron powder with a mass fraction of 95% and ele...

Embodiment 3

[0053]Polyethylene isolation film used for repeated use in tire production, including outer film, middle film and inner film; the thickness ratio of the three films is 4:2:4 in sequence;

[0054] The total thickness of the outer film, the middle film and the inner film is 100 μm.

[0055] The polyethylene isolation film used for repeated use in tire production is calculated in parts by weight: the outer film and the inner film are blends of low-density polyethylene and linear low-density polyethylene, both of which are 40 parts; The middle layer film is a blend of linear low density polyethylene and an oxygen absorber, 40 parts.

[0056] In the outer film and the inner film, the weight ratio of low density polyethylene to linear low density polyethylene is 10:1; in the middle layer film, the weight ratio of linear low density polyethylene to oxygen absorber is 100:1.

[0057] The oxygen absorbent is iron powder with a mass fraction of 98% and electrolyte with 2%.

[0058] Th...

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Abstract

The invention relates to a polyethylene isolating film reusable in tire production and a preparation method of the polyethylene isolating film, in particular relates to an isolating film reusable in the production process of radial tires, and belongs to the technical field of production of the radial tires. The polyethylene isolating film comprises an outer film, an intermediate film and an inner film, wherein the thickness ratio of the three films is (3-4):(2-4):(3-4); the total thickness of the outer film, the intermediate film and the inner film is 30-150 microns; the polyethylene isolating film is prepared by batching, fusion, extrusion, film blowing, air-cooling sizing, surface treatment and winding. Oxygen can be isolated by the three-layer composite polyethylene isolating film prepared through the method, all layers of the polyethylene isolating film are well compatible, disengaging and separation of the layers can be avoided, and the physical and mechanical properties can be kept under the condition that the film is reused.

Description

technical field [0001] The invention relates to a polyethylene isolation film used for repeated use in tire production and a preparation method thereof, in particular to an isolation film capable of repeated use in the production process of radial tires and a preparation method thereof, belonging to the production of radial tires technology field. Background technique [0002] Polyethylene (PE) is a representative of thermoplastic polyolefin, which is mainly used in the field of packaging. PE film has the advantages of low cost and excellent mechanical properties, so it has been widely used in the field of industrial packaging. In tire production, in order to avoid premature vulcanization of raw rubber, the packaging material needs to have good oxygen barrier performance, so the effectiveness of ordinary PE film packaging is poor. Special packaging materials are used to limit the exposure of oxygen-sensitive raw rubber to oxygen to ensure the quality of raw rubber. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/18B32B27/32B32B37/00C08L23/06C08L23/08C08K3/08C08K3/14C08K3/22C08K3/16B29C55/28B29C47/92B29C47/60B29C71/04B29C48/10B29C48/16B29C48/625B29C48/92
CPCB29C48/397B29C48/92B29C2948/92704B29C2948/92876B29C48/10B29C48/16B29C48/625B29C48/911B29C2948/9259B29C2948/926B29C2948/92647B29C2948/92828B29C2948/92885
Inventor 蒋晓明
Owner HAOCHEN WUXI PLASTIC IND CO LTD
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